They both helped keep the balance between free and slave states .
It solidified our independence as a country. It boosted the economy through manufacturing. It also changed the direction of expansion from the North to the West.
The right answer is Darius iii was the king of Persia. As the ancient knowledge tells, Darius III was the most important opponent of Alexander the great, and one of the most achievements of his conquests. The Persian kingdom was an immense empire, established two centuries before and extending from portions in North Africa, Mediterranean, India and central Asia. Even the odds against Alexander the great, he succeeded in defeating the Persian army during three major combats.
The correct answer is D.)The situation was similar to America under British control
They wanted to ensure that no European country will ever again rule in the new continent or that it will not colonize it.